Dishwasher panel



FIG. 1 is a perspective view of a dishwasher panel showing my new ornamental design;

FIG. 2 is a front view thereof; and,

FIG. 3 is a top view thereof.

The broken lines represent environment or structure of the dishwasher panel and do not form a part of the claimed design.

The rear and bottom views of the dishwasher panels are not shown and do not form a part of the claimed design. 

The ornamental design for a dishwasher panel, as shown and described. 